Is it OK to block off vents?
Is it OK to block off vents? Instead of blocking the flow of air in a room, closed-off vents simply create additional pressure within the ductwork. Unexpected blockages can cause your modern furnace to work harder than it should, while limited airflow can cause your ducts to freeze during cold winter weather. Can I block an air vent in a bedroom? You will probably see one of two things - a gap between the inner and outer skins of the walls or the equivalent to a duct to the outside. If there is a gap between between both skins then...